The length of a vertebrate's determine its ability to concentrate urine.
axons
synapses
malpighian tubules
nephrons

Urgent. the table shows the relative blood flow through some organs in the human body that is, the percentage of blood that flows through a given organ, through which organ(s) does all the blood flow? explain the effect of exercise on blood flow to skeletal muscles.

What's the waste product of electrons and pyruvate combining in fermentation?  

This is a situation in which genes are attached to an organism's sex chromosomes; the sex of an organism influences the expression of a gene.